/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

var zrUtil = require("static/plugins/js/zrender/lib/core/util");

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
function _default(ecModel) {
    ecModel.eachSeriesByType("radar", function (seriesModel) {
        var data = seriesModel.getData();
        var points = [];
        var coordSys = seriesModel.coordinateSystem;

        if (!coordSys) {
            return;
        }

        var axes = coordSys.getIndicatorAxes();
        zrUtil.each(axes, function (axis, axisIndex) {
            data.each(
                data.mapDimension(axes[axisIndex].dim),
                function (val, dataIndex) {
                    points[dataIndex] = points[dataIndex] || [];
                    var point = coordSys.dataToPoint(val, axisIndex);
                    points[dataIndex][axisIndex] = isValidPoint(point)
                        ? point
                        : getValueMissingPoint(coordSys);
                }
            );
        }); // Close polygon

        data.each(function (idx) {
            // TODO
            // Is it appropriate to connect to the next data when some data is missing?
            // Or, should trade it like `connectNull` in line chart?
            var firstPoint =
                zrUtil.find(points[idx], function (point) {
                    return isValidPoint(point);
                }) || getValueMissingPoint(coordSys); // Copy the first actual point to the end of the array

            points[idx].push(firstPoint.slice());
            data.setItemLayout(idx, points[idx]);
        });
    });
}

function isValidPoint(point) {
    return !isNaN(point[0]) && !isNaN(point[1]);
}

function getValueMissingPoint(coordSys) {
    // It is error-prone to input [NaN, NaN] into polygon, polygon.
    // (probably cause problem when refreshing or animating)
    return [coordSys.cx, coordSys.cy];
}

module.exports = _default;
